Need some help identifying luger I inherited please

[Jake]

I know this isn't in the best condition by no means but I just got it after my grandfather passed away, have not done anything besides making sure there wasn't anything in the chamber, took some pictures. He had only a few papers printed from this website, that's what led me here lol. I'd like to know what it is like model, year, anything really. I first seen this pistol about 20 years ago, pretty sure he traded a padlock for it (that's what he collected). He told me that it was a .30 caliber WW1 era German Luger and that he didn't know much about it. Also opinions on having it "restored" for lack of better words? At least to be able to shoot it, maybe. I was given bullets and encouraged to shoot it, but I just don't think firing it or attempting to would be smart so I wasn't going to but my son asked me if we could so yeah. Sorry for so much text and Thanks in advance anyone.